M&P magazine drop

[KC80]

So a couple years ago I purchased an M&P 9c and while I really like the gun I never could understand why the magazines wouldn't drop free. So I looked it up on YouTube. It's a simple fix that I did with a sharp knife instead of a Dremel. Hope this helps.

[LAYGO]

Hmm, I'll double check, but of the 10+ mags I've got for my M&P .40, I don't recall any problems dropping.

Does yours kick off the slide lock when seating a magazine? My .40/.45 does that. I do not think my Shields do that.